Air conditioning apparatus



June 2l, 1955 J. H. JENNINGs 2,711,087.

AIR CONDITIONING APPARATUS Filed Nov. l2. 1955 4 Sheets-Sheet 1 June 21,1955 J, H JNMNGS 2,711,087

AIR CONDITIONING APPARATUS Filed NOV. l2, 1953 4 Sheets-Sheet 2 R A 1N VEN TOR.

June 2l, 1955 J, H JENN|NG$ 2,711,087

AIR CONDITIONING APPARATUS Filed Nov. 12, 195s 4 sheets-sheet s M f5 75START/NG Canne/rsf .9m/mwa maar 90 ars/nana Razz-eraf? 1N VEN TOR.

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June-2l, 1955 J. H. JENNlNGs 2,711,087

AIR CONDITIONING APPARATUS- Filed Nov. 12, 1955 v 4 Sheets-Sheet 4JNVENT 3,?

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2,711,087 Am ooNDrrIoNnsGAPrARATUs John H. Jennings, Evansville, Ind.,Aassignor to Servei, Inc., ew York, N. Y., a corporation of DelawareApplication November12, 1953, Serial No. 391,453 9 Claims. (Cl. 62-129)One of the objects of the present invention is to pro- Y' vide an airconditioning unit with a single control element for starting, stoppingand adjusting ytlie unit for L any operating condition desired.

Another object is to provide an air conditioner with a single controlelement for adjusting the conditioner to circulate air in an enclosurewith or without cooling and to either add outside fresh air from theenclosure.

Another object is to provide an air conditioning unit of the typeindicated with a single control lelement for adjusting the conditionerfor all operating conditions including reduced air circulation withthermostatic control of cooling at night to reduce the noise level to aminimum for producing a comfortable condition for sleep.

Another object is to provide an air conditioner of the type indicatedhaving separate compartments" in which room air and outside air iscirculated and a novel arrangement between compartments operable indifferent adjusted positions to cause air to iiow in either directionbetween compartments to supply outside makeup air to the enclosure orexhaust stale air from the enclosure to the outside.

Another object is to provide an air conditioner of the type indicatedwith a damper having angularly spaced radial vanes movable to aplurality of positions relative to streams of air circulating in.separate com-V partments to either close a port opening between thecompartments or selectively cause ow .of'air in either direction betweenthe compartments.`

Still another object is to provide a novel control for an airconditioner of the type indicated which is of simple and compactconstruction, economical to manufacture and assemble and reliable inoperation.

These and other objects will become more apparent from the followingdescription and drawings in whichlike reference characters denote likeparts throughout the several views. It is to be expressly understood,however, that the drawings are for the purpose of illustration only andnot a definition of the liinits of the invention, reference being hadfor this purpose to the appended claims. In the drawings:

Fig. 1 is a perspective view of an airconditioning unit incorporatingthe novel featuresofI the present invention. A

Fig. 2 is a sectional View of the air` conditioning unit in sideelevation showing the fans for circulating air in adjacent compartmentsand the passageway through which air may flow between compartments.

Fig. 3 is a plan view partly in section showing the passageway betweenadjacent compartments and the connection between the single dial controland damper for controlling air flow through the passageway; Y

Fig. 4 is a plan view of the single dial control.

air to or exhaust stale Fig. 5 is a detail view showing the controldamper in side elevation;

Fig. 6 is asectional View on line 6-6 of Fig. 5 showing the angularlyrelated vanes of the damper and the relation of the damper tothepassageway between adjacent compartments. y

Fig. 7 is a plan view showing the position of the damper when the dialis at Oil position.

Fig. 8 is a view similar to Fig. 7 showing the damper closing thepassageway whenthe dial is moved to-Full on position.

Fig. 9 is a similar view showing the position ofthe damper when the dialis moved to Nite position to cause outside air to tlow through thepassageway into the enclosure.

Pig. l0 is a similar view showing the position of the damper when thedial is moved to Fresh Air'coolin'g position.

Fig. ll is a similar View showing the position of the damper when thedial is moved to Fresh Air ventilating position.

Fig. l2v is a similarview showing the position of the damper when thedial is moved to Exhaust position to withdraw stale air from theenclosure; and Y Fig. 13 is a diagrammatic view of the electric controlcircuit for controlling operation of the, air conditioner at the variousoperating positions of the single dial control element.

The present invention is shown applied to a room air conditioning unitadapted to be mounted in a window or other suitable wall opening of-theenclosure to be air conditioned. The air conditioning unit is enclosedin a housing comprising a` weather casing 15V adapted n to be xedlymounted on a ledge in the wall opening such as a window sill andprojecting outwardlytherefrom, and a decorative casing section 16projecting into the roomV or enclosure, see Fig. 1. The unit, per se,comprises ay base 1'7, see Fig.v 2, mounting the various operatingelements and partitions and is slidable bodily into the weathercasing-section 15. Whenl the unit is slid into operative position in theweather casing 15 the latter encloses the rearward portion of theunit.FlrIhe decorative casing 16 is -then applied over the inwardlyprojecting portion of the unit. Certain portions of the .unit cooperatewith the casing sections 15 and i6 y*to form seals therebetween andscrews 18 inserted through the sides of the decorative casing sectionVlo into projections of the weather casing v15 lock the casing sectionstogether and hold. the unit therein. A llange 19 is provided attheforward edge of the weather casing section 15 for mounting a suitablegasket to yseal the casing in the window or otherV opening in the wallof the enclosure.

The weather casing 15 is of generally rectangular form having rows oflouvers 20 at each side thereof, see Figs. l and 3, through whichoutside air may flow into the casing. The rearward wall of the weathercasing section 15 has a rectangular opening 21, see Fig. 2. The decoravtive casing 16 also is of generally rectangular-shape f havingvan openbottom anda rectangular opening 22 in the front wall23 thereof. Thelower portion of the front wall 23 is spaced from the forward edge ofthe .base 17 to provide a room air inlet opening 24.v A plurality` ofperforated Vpanels 25 are mounted in the open ing 22 to provide room airoutlets. Preferably, the individual panels 25 have a series ofdecorative cross ribs for directing the air in one direction and aremovable relative to the casing section 16 to direct the air in any oneof a plurality of directions desired.

A transverse partition wall 26 extends upwardly from and across the base17 to divide theV interior ofthe unit into an inner compartment 27projecting into the enclosure and an outer compartment 28 in the weathercasing 15. As illustrated in Fig. 3, the transverse partition wall 26has an offset portion 26a at the left-hand side to provide a recess 29for a purpose as later explained. Side walls 30,' 31, and 32 projectinwardly from the transverse wall 26 and horizontal partitions 33, 34and 35 complete the compartment 27 and divide t`into a plurality ofsuperimposed chambers 36, 37 and 38. As shown in Figs. 2 and 3, a secondtransverse partition wall 39 extends upwardly from the base a heightequal to the height of the chamber 36. The second transverse partitionwall 39 has a portion 39a extending forwardly at an angle from the firstpartition wall 26 at a point spaced from the right-hand edge thereof anda portion 39h extending laterally at an angle to the side wall 30.Horizontal partition 33 overlies the second transverse wall 39 andextends inwardly therefrom to approximately the forward edge of the baseto define the lowermost chamber 36 and the inward end of the chambercommunicates with the air inlet opening 24 throughout its width.

The horizontal partition 34 overlies the partition 33 in spaced relationthereto', see Fig. 2, and has a horizontal portion 34a projectinginwardly from the transverse wall 26, a downwardly inclined portion 34hand a forwardly projecting horizontal portion 34C which together withthe side walls and 31 form the intermediate chamber 37. A coolingelement 40, constituting the evaporator of a compression typerefrigeration system, is located between the forward portions of thehorizontal partitions 33 and 34C throughout the width of the unit. Alter 41 is mounted in suitable brackets at the front oi the coolingelement and is located rearwardly and above the air inlet opening 24.The forward portion of the horizontal partition 33 underlying thecooling element 40 constitutes a drip pan for receiving condensate fromthe cooling element and draining it to the compartment 28. A centrifugalfan 42 is located in the intermediate chamber 37 and has a scroll casingmounted on the base 17 at the rear of the second transverse partition39, see Fig. 3, with an outlet 43 projecting through the horizontalpartition 34a. Fan 42 has an axial air inlet opening 44 and a rotor 4Swith peripheral blades.

The side walls 3d and 32 and the horizontal partitions 34 and 35 denethe upper or air outlet chamber 38 and their forward edges have asealing engagement with the decorative casing 16. Thus, air in theenclosure to be conditioned is drawn into the unit through the air inletopening 24 by the fan 42 and ows through the filter 41 and coolingelement 46. The conditioned air is then discharged by the fan V42into-the chamber 38 constituting a plenum and is discharged through theperforated air directing elements 25 back to the enclosure.

The weather casing 15 and base 17 dene the entire outside compartment28. A heat dissipating element 50, constituting the condenser of therefrigeration system, is mounted on the base 17 and closely lits theopening 21 in the rear wall of the casing section. A propeller type fan51 is mounted in a shroud ring S2 in front of the condenser 59. Fan 51and rotor 45 of fan 42 are driven by a single motor 53 mounted on asuitable bracket on the base 17 in compartment 28. Motor 53 ispreferably constructed to operate at high and low speeds as wellunderstood by those skilled in the art and has three connections forthat purpose, see Fig. 13. The refrigerant compressor may take anysuitable form but as herein illustrated comprises a hermetically sealedunit 54 mounted resiliently on the base 17 in compartment 28 with oneend projecting into the recess 29 and its opposite end projectingrearwardly of partition 26 so as to distribute its weight on the ledgeor window sill on which the airconditioner is mounted. It will beunderstood that the compressor 54, condenser 50 and evaporator 40 areVsuitable connected in a conventional manner to produce a completerefrigeration system but such connections are not herein illustrated ordescribed as they form no` part of the present invention. Fan 51 drawsair, into the weather casing 15 through the louvers 20 yin the sidewalls thereof and directs the air over the heat dissipating element orcondenser Si) to the outside ambient to remove the heat absorbed fromthe air in the enclosure t0 be conditioned. It will be observed byreference to Fig.

3 that the air flowing toward thefan 51 circulates around n the motorcompressor unit 54 to cool the latter. Y n

In accordance with the present invention, a novel construction isprovided to adapt all ofthe functions ofthe 7 air conditioningV unit toVbe controlled by a single element. The construction further includes .anovel arrangement to either supply outside fresh air to the enclosure tobe`V conditioned or exhaust stale ,air therefrom. The various functionsof the unit controlled by the single element are recirculation of roomair either with or without cooling, cooling at full capacity, coolingwith reduced air circulation and thermostatic control for nightoperationV to reduce noise to a minimum, addition of outside make-up airto recirculated room air either with or without cooling andexhaust ofstale air from the enclosure. i l

The arrangement for supplying fresh make-up air tV or exhausting staleair from the'enclosure being air conditioned comprises a passageway 56in the transverse partition 26 through which air may pass in eitherdirection between compartments 27 and 28. The passageway 56.is

of the passageway and a top wall 59 between the side walls inclineddownwardly from the top of the passageway to the base 17, see Figs. 2and 3. The bottom of the triangular chamber 57 opens into the lowerchamber 36 pre- Y viously described. By reference to Figs. 2 and 3, itwill be noted that the triangular chambers 57 and 36 in Vertical andhorizontal planes, respectively, have'the same area at Y their point ofjuncture so that air can ow from avvertical inlet to a horizontal outletor vice versa with a minimum Y impedance in its path of llow.

The air how through the passageway by a damper 60 located in compartment28V adjacent the passageway and side wall of the weather casing 16, seeFigs. 2, 3, 5, and 6. By reference to Figs. 5 and 6, it will' beobserved that' the damper comprises a frame or casing mounted on apedestal 61 and having a circular b ase plate 62 and circular top plate63. Extending vertically between the peripheries of the circular baseand top plates 62 and 63 are narrow arcuate walls 64 and 65 and a relaitively wide arcuate wall 66 extending through substantially Narrowarcuate wall 64 is located rearwardly from the passageway 56 whilearcuate wall 65 is located adjacent the side wall of the weather casing15 lwith a sealing strip 67 therebetween. The wider arcuate wall 66 hasone end engaging a sealing strip or layer of sound deadening materialand the wall projects from the inside wall 31 i of passageway 56transversely andrearwardly of the corny partment 2S. Mounted forrotation'kbetween the base and .Y

top plates 62 and 63 is the movable damperelementltl comprising a pairof angularly related blades 69 and 70- projecting at a slightly greaterangle than 90 and of a radius substantially equal to the radius of thedamper casing. .The movable damper element 68 has axial pintles 71 and71a journaled in base plate 62 and top plate63,A` respectively,.andpintle 71a mounts a sprocket 72 at its Y. A upper end. A bracket 73projectingrearwardly from parbrace the movable'k titi'on 26 embraces thepintle 71a to damper element 68.

Thespindle control element is illustrated in the of a dial y74,'seeFigs. 1 to 4, at the top of the decorative casing 16 and is mounted on ashaft 75. Itwill be noted by reference to 4 that theV is marked ywithin- 56 is controlledA 'Y dicia indicating Cooling throughout one halfits periphery and Ventilating throughout the other half its peripherywith six different operating positions which may be registered with anindicating mark or arrow A on casing 16. The six operating positions areOi position, Full on position, Nite position, Fresh Air coolingposition, Fresh Air Ventilating position, and an Exhaust position on theVentilating side. Shaft 75 extends through a switch box 76 mounted onand depending from the horizontal partition wall 35, see Fig. 2, and thelower end of the shaft projects beyond the switch box and mounts asprocket 77 in alignment with the sprocket 72. An endless iiexible chain78 connects the sprockets '72 and 77 so that rotation of the dial 74 istransmitted to the movable damper element 68 with a 1:1 ratio so thatthe position of the vanes 69 and 70 of the damper always correspond withany particular operating position of the dial. The portion of the shaft75 extending through the switch box `65 has a pair of brushes 79 and 80,see Fig. 13, which cooperates with one or the other of a plurality offixed contacts 81a, 81h, 81e, 81a', 81e or Slf, and 82a, 32h, 82e, 82d,82e, or 82j, respectively, so that the switches and movable damperelement 63 operate simultaneously. The detailed construction of theswitches 79 and 80 is not illustrated but will oe fully understood byone skilled in the art from the diagrammatic illustration inFig, 13.

Damper 60 is so constructed and arranged with respect to the air streamsproduced by the fans 42 and 51 in the compartments 27 and 28 as toselectively cause a flow of air in either direction through thepassageway 56. Figs. 7 to 12, inclusive, illustrate various operatingpositions of the damper to either close the passageway 56, open thepassageway to cause outside fresh air to flow therethrough fromcompartment 28 to compartment 27 or open the passageway to cause staleair to ilow therethrough from the enclosure to the outside. With themovable damper element 68 in the position illustrated in Fig. 7, vanesy69 and 70 extend between arcuate walls 65 and 66 of the damper casingto close the passageway 56. With the movable damper element 63 in theposition shown in Figs. 9 and l0, Vthe eect of fan 42 on the airentering louvers adjacent the damper is greater than the effect of fan51 to cause a portion of the outside fresh air entering weather casing15 to flow through the passageway 56 and chambers S7 and 36 into the airstream i entering the compartment 2'7. With the movable damper element68 in the position illustrated in Fig. 11, the vane 70 acts as a scoopto positively direct the iuflowing fresh air through the passageway 56.With. the movable damper N element 68 in the position illustrated inFig. 12, the vane 70 prevents air from the adjacent louver 20 from owinginto the passageway 56 and the damper element as a unit opens a path 100from the passageway 56 directly to the fan 51 in parallel withthe-normal path of ow. Under these conditions the effect of fan 51 isgreater than the eect of fan 42 on air in the passageway 56 causing aportion of air entering the inlet port 24 to ilow through chamber 36 and57, passageway 56 and path 1G!) between damper element 63 and arcuatewall 66 to the fan 51 and then through condenser 50 to the outside.Thus, rotation of the dial 74 in either direction will cause operationof the switches 79 and 86 relative to fixed contacts 81 and 82 androtation of the damper element 68 to any ofthe plurality of positionsillustrated in Figs. 7 to 12. V

Switches 79 and 80 are connected in a suitable control circuit such asillustrated in Fig. 13. Current is supplied to each of the switches 79kand 80 from a line conductor L1 through conductors S3 and 84,respectively. Switch 79 controls operation of the motor compressor ofthecompressor motor. Thus, movement of the dial 74fto any ofthe positionscorresponding to FulL Nite or Fresh Air on the cooling side of the dialwill initiate contact-k79. The motor control includes a conventionalstarting relay 89 and condensers 90 and 91 and the opposite ends of lthestarting and running windingsv s87 and 88 are connected by a conductor92 through a relay switch 93 to the other side of the line L2.

Switch 80 Vcontrols the motor 53 for operating the fans 42 and 51. Inthe position shown in Fig. 13, switch Si)V engages iixed contact 82awhich is unconnected kor open and corresponds to the Oif position ofthevdial 74 as shownin Fig. 4. Contact `82b is connected by a conductor94 to the high speed winding of the motor 53 to operate theffans 42 and51. atfull'capacity.l Contact 82C is connected by alconductor 95 to thelow speed winding of the motor 53 to operate the fans 42 and 51 at lowspeed. Acommon conductor 96 connects the opposite ends of the high speedand low speed windings to the other side of the line L2 to completeacircuit. VContact 82C is also connected through a conductor 97 t0 coil98 of relay 93 to open the return conductor 92. A thermostatic controlswitch 99` is connected in parallel with the relay switch 93 andthethermostat is responsive to the temperature in the enclosure beingconditioned for controlling operation of the compressor motor 54.Contacts 82d, 82e and82f are connected together and to conductor 94 forenergizing the high speed winding of the fan motor 53 when engaged byswitchV 80. One form of the invention having nowbeen described in ydetail the mode of operation is explained as follows.

unit 54 of the refrigeration system and fixed contact Sla With the dial74 in the Gif position the switches 79 and 80 are open circuited asillustrated in Fig. 13 and movable damper element 68is in the positionillustrated in Fig. 7 to close passageway 56. To initiate operation ofthe air conditioning unit, the dial 74 may be moved in either direction.For purposes of description let it be assumed that the dial 74 is ymovedfrom the Off position tothe Full Von clockwise. Switch 79 will have beenmoved into engagement with xed contact Slb toV complete a circuit to thecompressor motor and thereby initiate operation of the refrigerationsystem. Simultaneously, switch 80 will have engaged fixed contact 821)to initiate operation of the fans 42 and 51 at high speed to operate theconditioner at maximum capacity. It will be noted that the movement ofthe dial 74 fromV Ofi to Full on position corresponds to a small angularmovement -of'the dial which motion is transmitted through the shaft 75,sprocket 77,.chain 78 and sprocket 72 to move the damper 68 from theposition shown in Fig. `7 to that shown in Fig. 8. In this position' thevanes 69 and 70 of the movable damper element 68 extend from the arcuatewalls 65 and 66 of the damper casing to completely close the passagewayS6 between compartments 27 andy 28. Thus, air in the enclosure to beconditioned is circulated by the fan 42 through. the cooling element 40in compartment 27 to cool and dehumidify the air and then return it tothe enclosure. Outside airis drawn through the louvers 20 in the sidesof the weather casing 15 by the fan 51 and directed outwardly throughthecondenser 50 to dissipate the heat of compression and the heat absorbedby the cooling element 40.

By moving the dial 74 from Full on position. to`

Nite position, switch 79 moves from contact *81h to 81g to maintain the'refrigeration system in operation and switch 8i) is' moved from 82b to82e to operate the fans 42 and 51 at low speed, see Fig. 13.Simultaneously,

coi 98 of relay` switch 93 is energized to open the return conductor 9'2and operate the refrigeration system under position oy Vrotating thediall thermostatic control in accordance with requirements. Rotation ofthe dial 74is transmitted through the shaft 75, sprocket 77, chain 78and sprocket `72 to rotate'thc movable element 68 of the damper from theposition shown in Fig, 8 to that shown in Fig. 9. Itwill be observed byreference to Fig. 9 that the movable damper element 68 then opens thepassageway S6 and closes path 100. The ow of air through the air inletopening 24 and into the cooling element 40 across the front of the openend of chamber 36 induces the ilow of air from chamber 36 into the airstream. Air entering compartment 28 through the louvers Ztl adjacent thedamper 60 then iiows into the passageway 56 to replace the air inducedfrom the forward end of the chamber. In other words, the constructionand arrangement of the damper element 68 relative to the air streams inthe compartments 27 and Z8 is such as to produce a resultant forcecausing a ilow of fresh air through passageway 56 into compartment 27.The air flows through the rectangular passageway 56 in a vertical planeand then ilows at the bottom of chamber 57 into chamber 36 in ahorizontal plane and, due to the triangular forms of the chambers inright angular plane, the air ows from one to the other with a minimumimpedance. Thus, for night operation the fans 42 and 51 operate at lowspeed to reduce noise to a minimum and fresh make-up air from theoutside is introduced into the recirculated air into the enclosure.These functions of the air conditioner together with intermittentoperation of the refrigeration system by the thermostat 99 in accordancewith requirements all cooperate to induce comfortable conditions forsleep.

When dial 74 is moved from Nite position to Fresh Air position, switch79 moves from engagement with contact 81C into engagement with contact81d to maintain the refrigeration system in operation and switch 80moves from contact 82C to 82d to operate the fan motor 53 at high speed.The movable element 68 of damper 60 is moved through the slight anglefrom that shown in Fig. 9 to that shown in Fig. l0 and fresh make-up airis added to the recirculated air in the room through the passageway 56between compartments 28 and 29 as explained above with respect to Fig.9.

k When dial 74 is moved clockwise from Fresh Air on cooling to Fresh Airon Ventilating, switch 79 is 'moved from engagement with contact 81dinto engagement with open contact 81e to stop operation of therefrigeration system and switch 80 is moved from contact 82d to 82e tocontinue operation of the fan motor S3 at high speed. The motion of thedial 74 is transmitted by the chain 78 and sprockets 72 and 77 to movethe movable element 68 of the damper 60 from the position shown in Fig.l to that shown in Fig. ll. It will be noted thatV in the latterposition the vane 70 of the damper 68 extends rearwardly intocompartment 28 in a direction substantially parallel with the wall 31and overlies a portion of the louver 20 in the weather casing 15. Thus,in addition to the induced circulation of fresh make-up air intocompartment 27 as explained above, the vane 7 operates to scoop airtending to ilow toward the fan 51 and direct it through the passageway56 and chambers 57 and 36 into the stream of air owing into thecompartment 27 through the air inlet opening 24. The other vane 69 ofthe damper element 68 engages the arcuate portion 66 of the dampercasing to close path 100 and prevent ow of air from the passageway 56 tothe fan 51. The unit then operates to recirculate air in the enclosureto 'be conditioned with the addition of fresh outside air but withoutrefrigeration.

' When dial 74 is moved in a clockwise direction from the Fresh Airposition to the Exhaust position on the Ventilating side of the dial,switch 79 is moved from contact Sie into engagement with open contact81j to prevent operation of the refrigeration system and switch l80 ismoved from contact 82e into engagement with contact 82]c to maintainthe* fan motor 53 in operationl tion shown in Fig. 1l to that showninFig` l2. The vane.

7i? of the damper 60 then extends to the narrow arcuate strip 67 of thedamper casing to shut oit communication betweenV the louver Ztl in theweather casing 1S and the passageway 56 and the vane 69 extendsrearwardlyV ina direction parallel with the side wall of the weathercasing to open the path between the damper element 468v i and the widearcuate wall 66 of the damper casing. Due

to the direct line between the passageway 56 and the fan.y 51, air iscaused to tlow from the triangular chamberV 57 through the passageways56 and path 100 directly to the fan 51. A portion of the air from theenclosure entering the air inlet opening 24 to compartment 27 then owsinto the open end of chamber 36 in a horizontal plane and then upwardlythrough the triangular chamber 57 in a vertical plane and outwardlythrough the passageway 56 into the compartment 23. Thus the airconditioning unit operates to exhaust stale air from the enclosure.V Iti will be understood that the dial 74 can be moved in ither direction toany desired position to obtain ther` motionk desired forcomfortconditions. Y

It will now be observed that the present invention provides a singlecontrol element for starting, stoppingand adjusting the air conditioningunit for producing anyY operating condition desired. It will further beobservedy 'f that the present invention provides a single control ele-.

ment for adjusting the conditioner to circulate airv in, an

enclosure with or without cooling, add outside freshl air.

to or exhaust stale air from the enclosure and operate the conditionerwith reduced air circulation and thermostatic control of cooling fornight operation' to reduce noise.

and induce conditions favorable for sleep. It will further be observedthat the invention provides a passagewayor port opening between adjacentcompartments of Van air conditioner together with an adjustable damperVso related to the streams of air circulating in the compartments as tocause outside fresh air to flow into the enclosure or to cause stale`air to ow from the enclosure to the outside. It will still further beobserved that ythe present invention provides a novel control for a roomair conditioner which is of simple and compact construction, economicalto manufacture and assemble, and re-V Y* liable in operation. K

While a single embodiment of theinvention'is herein illustrated anddescribed, it will be understood that modi-v tications may be made inthe construction and arrangement of elements without departing from thespirit or scope of the invention. Therefore, without limitation in thisrespect, the invention is detined in the following claims.

I claim: v

l. An air conditioner having separate compartments, a refrigerationsystem having a heatk absorbing element in one compartment and a heatdissipating element in another compartment, means for circulating roomair and outside air through the respective compartments, means forseparately controlling operation of the refrigeration system and aircirculating means, respectively, a passage. i

way communicating with adjacent compartments, a damper movable relativeto the passageway and so constructed as to close the latter or provideseparate paths to or from the passageway, and a single control elementconnected to simultaneously actuate the control means for therefrigeration system, air circulation means and damper to selectivelycirculate room air with or without jcooling or the addition of outsideairor exhaust room air'.

2..An air conditioner having a housing divided into adjacentcompartments, ay refrigeration system having a heat absorbing element inone compartment and a heat dissipating element Vin the adjacentcompartment, means for circulating 'room air and outside Vair f throughthe respective compartments, separate controls for the refrigerationsystem and air circulating means, respectively, a port opening betweenadjacent compartments, a damper having angularly related radial vanesand mounted to rotate about a xed axis relative to the port opening toprovide separate paths to and from the latter, and a rotatable elementat the exterior of the conditioner and connected to actuate therefrigeration and air circulation controls and damper simultaneously ina predetermined sequence.

3. An air conditioner having a housing divided into adjacentcompartments, a refrigeration system having a heat absorbing element inone compartment and a heat dissipating element in an adjacentcompartment, means for circulating room air and outside air through therespective compartments, a port opening between adjacent compartments, adamper having angularly related vanes and mounted to rotate about avertical axis relative to the port opening, a switch box having a shaftextending vertically therethrough, an actuating element at the exteriorof the housing for rotating the shaft, electric switches in said switchbox for controlling the refrigeration system and circulating means andactuated by the shaft, and a chain and sprocket connection between theshaft and damper for simultaneously actuating the control switches anddamper.

4. An air conditioner comprising a housing, a base in the housing, atranverse wall extending upwardly from the base to divide the housinginto adjacent compartments, one of the compartments having spacedpartition walls parallel to the base to divide it into separatechambers, an air inlet opening in the housing communicating with thelower and intermediate chambers, an air outlet in the upper chamber, apassageway in the transverse wall communicating with the lower chamber,air inlet and outlet openings in the walls of the other compartment, arefrigeration system having a heat absorbing element in the intermediatechamber of one compartment and a heat dissipating element in the othercompartment, fans in each of the compartments for circulating room airand outside air through the respective compartments, a rotatable damperfor controlling the flow of air through the passageway betweencompartments, a switch box having electric switches for controllingoperation of the refrigeration system and fans, and a single controlelement at the exterior of the housing and connected to operate theswitches in the switch box and movable damper element in a predeterminedsequence.

5. In an air conditioner of the type having a compartment with a heatabsorbing element therein through which air in an enclosure iscirculated and an adjacent compartment with a heat dissipating elementtherein through which outside air is circulated, the combination withsuch an air conditioner of a port opening between adjacent compartments,and a single damper having angularly related radial vanes and movable toa plurality of positions relative to the port opening and aircirculating means in adjacent compartments to close the port in oneposition, induce ow of outside air through the port into the enclosurein another position and induce low of room air through the port from theenclosure to the outside in another position.

6. An air conditioner having a housing divided into adjacentcompartments, a refrigeration system having a heat absorbing element inone compartment and a heat dissipating element in another compartment,each of said compartments having an air inlet and outlet, a fan in eachcompartment for circulating room air and outside air through therespective compartments, a passageway between adjacent compartments, anda movable damper having angularly related radial vanes and locatedbetween the air inlet and fan in one of said compartments, the angularvanes of said damper closing the passageway in one position, opening apath from the air inlet of one compartment to the passageway and bathingthe tio-w of air from the air inlet to the fan in another position andbattling the ow of air from the air inlet to the passageway and openinga second path from the passageway to the fan in another position.

7. A room air conditioner having a housing with a transverse walldividing the housing into separate compartments, a refrigeration systemhaving a heat absorbing element in one compartment and a heatdissipating element in the other compartment, each of said compartmentshaving air inlet and outlet openings, the air inlet openings to onecompartment being located in the Side wall of the housing, means forcirculating room air through the compartment having the heat absorbingelement and outside air through the compartment having the heatdissipating element, a passageway in the transverse wall adjacent theside wall of the housing having air inlet openings, a damper mounted forrotation about a vertical axis adjacent the passageway and side wall ofthe housing having the air inlet openings, said damper having angularlyrelated radial vanes, and means for rotating the damper relative to thepassageway and -side wall of the housing.

8. A room air conditioner having a base, a housing enclosing the base, atransverse wall projecting upwardly from the base and dividing thehousing into separate compartments, spaced partition walls in one of thecompartments parallel to the base to provide superimposed chambers, anair inlet in the bottom of the housing at the front of the base andlowermost partition wall, a passageway in the transverse Wall adjacentone side of the housing and communicating with the chamber between thebaserand the lowermost partition wall parallel thereto, the housing forthe other compartment having an air inlet opening adjacent thepassageway, a rotatable damper having angularly related radial vanesadjacent the passageway and side Wall of the housing having the airinlet opening, and means for rotating the damper relative to thepassageway and side wall.

9. An air conditioner comprising a housing, a base in the housing, atransverse wall extending upwardly from the base to divide the housinginto adjacent compartments, a refrigeration systemthaving a heatabsorbing element in one compartment and a. heat dissipating element inthe other compartment, means for circulating room air and outside air inthe respective compartments,l

the side wall of the housing having an air inlet opening to one of thecompartments, an opening in the transverse wall adjacent the side wallwith the air inlet opening and providing a passageway betweencompartments, a cage-like casing of generally cylindrical formpositioned between the side wall ofthe housing and transverse wallvadjacent the opening in the latter, said casing having spaced arcuatewalls contacting the side wall of the housing and transverse wall at theedge of the opening therein, a movable damper mounted to rotate in thecasing and having angularly related radial vanes for cooperation withthe arcuate walls of the casing, and means for rotating the movabledamper element in the casing.

References Cited in the tile of this patent UNITED STATES PATENTS2,451,366 Terry Oct. l2, 1948 2,456,391 Davies Dec. 14, 1948 2,488,589Eberhart Nov. 22, 1949

